| Barker | J | | | 2nd Battalion
Source: QSA and KSA medal rolls | (King's Own) Yorkshire Light Infantry |
| Barker | J | 4827 | Private | 2nd Battalion
Source: QSA roll | Lancashire Fusiliers |
| Barker | J | | Captain | Served in the Boer War in 1899-1902 as Railway Staff Officer (KSA with two clasps). | (King's Own) Royal Lancaster Regiment |
| Barker | J | 2621 | Private | 6th Battalion
Source: QSA roll | Lancashire Fusiliers |
| Barker | J | 2304 | Sergeant | 6th Battalion
Source: QSA roll | Lancashire Fusiliers |
| Barker | J | 5792 | Private | QSA (4)
Source: List of QSAs with the clasp Elandslaagte | Gordon Highlanders |
| Barker | J | | | 1st Battalion
Source: QSA and KSA medal rolls | King's Royal Rifle Corps |
| Barker | J | | | 1st Battalion
Source: QSA and KSA medal rolls | Essex Regiment |
| Barker | J | | | Received the Mediterranean Medal
3rd Battalion
Source: Medal roll WO100 368 | Loyal North Lancashire Regiment |
| Barker | J | | | Received the Mediterranean Medal
3rd Battalion
Source: Medal roll WO100 368 | (Prince of Wales's Own) West Yorkshire Regiment |
| Barker | J | | | 2nd Battalion, attached 4th Battalion
Source: QSA and KSA medal rolls | Bedfordshire Regiment |
| Barker | J | | | 2nd Battalion
Source: QSA and KSA medal rolls | Bedfordshire Regiment |
| Barker | J | | | 4th Battalion
Source: QSA and KSA medal rolls | Bedfordshire Regiment |
| Barker | J | 2899 | Private | QSA (4). Prisoner, Sanna's Post, 26 Mar 00. Released. Initial 'G' on Casualty Roll.
Source: QSA medal rolls | 10th (The Prince of Wales's Own Royal) Hussars |
| Barker | J | 3104 | Private | QSA (2). Discharged, 09 Aug 02.
Source: QSA medal rolls | 18th (Victoria Mary, Prince of Wales's Own) Hussar |
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